16beta-(amino) carbonyl androstanes and process for the preparation thereof



United States. Patent ice 3,066,136 16,8-(AMINO) CARBONYL ANDROSTANES AND PROCESS FOR THE PREPARATION THEREOF Pierre Crabb, Mexico City, Mexico, assignor, by mesne assignments, to Syntex Corporation, a corporation of Panama No Drawing. Filed Jan. 3, 1962, Ser. No. 164,148 19 Claims. (Cl. 260239.5)

The present invention relates to novel cyclopentanophenanthrene derivatives and to a process for the production thereof.

More particularly, the present invention relates to novel 16;8-(amino)carbonyl derivatives of the androstane series.

The novel compounds of the present invention which show a high anti-ovulatory activity and are also progestative, anti-estrogenic and anti-androgenic agents with antipyretic and non-narcotic analgesic properties are represented by the following formulas:

3,066,136 Patented Nov. 27, 1962 In the above formulas Z represents a double bond or a saturated linkage between C-4 and C-5; Y represents a double bond or a saturated linkage between C-5 and C-6; R and R each represent hydrogen, a lower alkyl, amino lower alkyl, lower alkylamino lower alkyl, dilower alkylamino lower alkyl, aryl or aralkyl group of up to 8 carbon atoms, R and R together with the nitrogen represent a heterocycle such as piperidine, morpholine, piperazine or pyrrolidine which may or may not contain alkyl substituents; R represents hydrogen or a "hydrocarbon carboxylic acyl group containing less than 12 carbon aotmsl The acyl group is derived from hydrocarbon carboxylic acids containing less than 12 carbon atoms which may be saturated or unsaturated, of straight, branched, cyclic or cyclic-aliphatic chain, aromatic and may be substituted by functional groups such as hydroxy, alkoxy containing up to 5 carbon atoms, acyloxy containing up to 12 carbon atoms, nitro, amino or halogen. Typical ester groups are the acetate, propionate, enanthate, benzoate, trimethyl: acetate, t-butylacetate, phenoxyacetate, cyclopentylpro pionate, aminoacetate and B-chloropropionate.

The novel compounds of the present invention are prepared by the process illustrated by the following equation:

at m

In the above formulas R, R and R have the same meaning as hereinbefore set forth.

In practicing the process outlined above, the starting A -l7a-pregnen 3p ol--one-16B-carboxylic acid 3- acetate (I) is treated with an organic peracid, such as trifiuoroperacetic acid to give 5a,6a-oxido-androstan-3p, 17a-diol-16p-carboxylic acid 3,17-diacetate, which upon treatment under Cornforth conditions yields the corresponding A -androsten derivative (II). Treatment of this compound with a suitable halogenating agent, preferably thionyl chloride, yields the corresponding l6fl-carboxylic acid chloride (III) which upon reaction with ammonia or an amine, as for example diethylamine, piperidine or diethylaminoethylamine afiords the corresponding l6p-(amino)carbonyl-313, 7a-diacetoxy A androstene derivative (IV). Hydrogenation of this compound in an organic solvent such as ethyl acetate in the presence of a suitable catalyst such as platinum oxide furnishes the respective 16fi-(amino)carbonyl-3}3,l7a-diacetoxy androstene derivative (VII).

The above described l6p-(amino)-carbonyl-3;8,17a-diacetoxy compounds (IV, VII) upon saponification in a mild alkaline medium, such as a potassium carbonate solution, aiford the corresponding 313,17a-dihydroxy derivatives (V, VIII; R =H-).

Oxidation of the saturateddiol (VHI; R =H) preferably under Oppenauer conditions yields the corresponding 3,17-dione (IX).

The 3fl,l7a-dihydroxy A androstene derivative (V; R =H) upon oxidation under the same conditions yields the respective A -androstene-3,l7-dione compound (VI).

The aforementioned 3,17-diols are conventionally acylated in pyridine with an acylating agent, such as the anhydride of a hydrocarbon carboxylic acid of the above described type, to give'the corresponding 3/3,l7a-diacylates (V, VIII; R =acyl).

The following specific examples serve to illustrate but are not intended to limit the scope of the present invention:

Example I A solution of trifiuoro-peracetic acid prepared from 9 cc. of trifiuoroacetic-anhydride such as described by Crabb et al., Tetrahedron, 3, 279 (1958), was added over a period of 15 minutes and at room temperature to a solution of 3 g. of A -l7a-pregnen-3/3-ol-2O-one-16B-carboxylic acid 3-acetate (prepared by conventional acetylation of the free Zip-alcohol described by Romo, Tetrahedron, 3, 37 (1958)) in 50 cc. of anhydrous methylene chloride containing in suspension 24 g. of anhydrous disodio phosphate. Then, there was cautiously added with cooling a 10% aqueous solution of sodium carbonate followed by 200 cc. of ether. The organic layer was separated, dried and evaporated to dryness. The resulting residue after chromatography and crystallization of the solid fractions afforded 5a,6a-oxido-androstane-3fl,17adio1-l6fl-carboxylic acid-3,17-diacetate, which upon treatment with sodium iodide, sodium acetate and zinc dust in acetic acid (Cornforth et al. J. Chem. Soc., 112 (1959)) yielded A -androstene-3 3,17a-diol-16fi-carboxy1ic acid- 3,17-diacetate.

Example I] 1 g. of the latter compound was dissolved in 50 cc. of benzene and treated with 2 g. of thionyl chloride.

The mixture was refluxed under anhydrous conditions for 2 hours. The solvent was evaporated under reduced pressure, the residue was again dissolved in 20 cc. of benzene and the solution evaporated to dryness, to make certain the total absence of thionyl chloride. The crude 16,3-carboxylic acid chloride was treated with 2 cc. of diethylamine in 50 cc. of benzene. The reaction mixture was left overnight at room temperature, then an aqueous solution of sodium carbonate was added. The resulting emulsion was extracted with ether, the extract dried 'over sodium sulfate and evaporated to dryness. Crystallization from methanol-water aflorded l6fl-(diethylcarbamyl)-3fi,l7a-diacetoxy-M-androstene.

Example Ill 1 g. of 3 3,17a-diacetoxy-A androstene-16fl-carboxylic acid was treated following the technique described in the foregoing example except that diethylamine was substituted by piperidine thus yielding 16fl-(piperidino carbonyl)-3fi,l7a-diacetoxy-A -androstene.

Example IV Following the procedure described in Example H except that diethylamine was substituted by morpholine there was obtained l6fl-(morpholino carbonyl)-3}3,l7adiacetoxy-M-androstene.

Example V Using the same conditions described in Example II except that diethylamine was substituted by N,N-diethylamino-ethyl-amine there was obtained 16fi-(N,N-diethylamino-ethyl-carbamyl) -3 p, 17 a-diacetoxy-A -androstene.

Example VI Following the technique of Example II except that diethylamine was substituted by N-methylaniline there was obtained 16/8-(N-methyl-N-phenyl carbamyl)-3p,17a-diacetoxy-A -androstene.

Example VII 1 g. of Sfl,17a-diacetoxy-M-androstene-l6fi-carboxylic acid was treated with thionyl chloride in accordance with Example II. The 16;8-carb=oxylic acid chloride thus obtained was dissolved in 50 cc. of benzene and 5 cc. of ammonium hydroxide were added. The formed precipitate was filtered ofi, washed with benzene and dried under vacuum. Recrystallization from alcohol-water afforded 16,8-carbamyl-3/3,17u-diacetoxy-A -androstene.

Example VIII II 165 diethylcarbamyl) 36, 17a diacetoxyandrostane I 16a. (diethylcarbamyl) 33,

17a diacetoxy A androstene 16$ (piperidinocarbonyl) 16B (piperidinoearbonyl)- 3 3,17; diacetoxy A an- 36,17a. diacetoxyandrodrostene stane 1613 (morpholinocarbonyl)- 16B (morpholinocarbonyl)- 313,130: diacetoxy A an- 35,1711. diacetoxyandroros en stane 16/3 (N,N' diethylaminoethylcarbamyl 318,17a-diacetoxyandrostane) 1 6B (N methyl N phenylcarbamyl) 35,17a. di-

165 (N,N' diethylaminoethylcarbamyl) 313,17a-diacetoxy A androstene 163 (N methyl N-phenylcarbamyl) 35,1711 d1- acetoxy A androstene acetoxyandrostane Example IX A suspension of 1 g. of l6B-carbamyl-3B,l7ot-diacetoxy- A -androstene in 60 cc. of methanol was treated with a solution of 1 g. of potassium carbonate in 6 c. of Water; the mixture was boiled under reflux for 1 hour and then cooled in ice and diluted with water. The formed precipitate was collected and recrystallized from acetone hexane to yield 16,8-carb amyl-A -andro stene-35,17a-diol.

The starting compounds under I were treated by the above technique, thus yielding the corresponding products under II.

- I 165- (diethylcarbamyl) -3B,

17 u-diacetoxy-A -andmstene 16/8 piperidinocarbonyl) -3B,

17 a-diaeetoxy-A -androstene 1618- (morpholinocarbonyl) 313,17adiacetoxy-A -androstene 16fldiethylcarbamyl) -35,

l'fa-diaeetoxyandrostane 16B- piperidinocarbonyl) -35, 17a-diacetoxyaudrostane 16H-(morpho1in0carb0nyl)- 35,17a-diacet0xyandtostane 163- N,N-diethy1am1noethy1carbamy1-3B,17a-diace toxyandrostaue 1 613-(Nrnethyl-Nphenylcarbamy1)-3B,17a-d1acetoxyandrostane I 16B-carbamy1-3B,17a-d1acetoxyandrostane II 1 6 3- (dlethylcarbamyl) -A androstene-3B,17a-diol 16B- (morpholinocarbony1)-A androstene-8B,17 a-diol 1613'(N',N-diethy1aminoethylcarbamyl) -A -andr0stene- 1613- (N-methyl-N-phenylcarbarnyl -A -androstene3fi, 17u-diol 16 64 diethylcarbamyD-andr0staue-3B,17a-diol 16B-(p1peridinocarbonyl) -androstane-3B,17a-dio1 16B- (morpholinocarbonyl) androstane-3B,17a-d1o1 Example X A solution of i1 g. of 16,8-carbamyl-A -androstene-3fl, l7oc-di0l in 80 cc. of toluene and 20 cc. of cyclohexanone was dried by distilling off cc. of the solvent. A solution of 1 g. of aluminum isopropoxide dissolved in 7 cc. of anhydrous toluene was then added and the mixture was refluxed for 45 minutes; 4 cc. of acetic acid were added and the solvent removed by steam distillation. The product was extracted several times with ethyl acetate and the organic extracts washed with 5% hydrochloric acid solution, water, 10% sodium carbonate solution and water until neutral, dried over anhydrous sodium sulfate and evaporated to dryness.

Crystallization from acetone-hexane afforded 1fifi-carbamyl-M-androstene-B,l7-dione.

When applying the above technique to the starting compounds listed below, there were obtained the corresponding products hereinafter set forth.

STARTING COMPOUNDS 16B- (pip eridinocarbonyl) -A androstene-3fl,17a.-diol (morpholinocarbony1)- A -andr0stene-3B,17 a-diol 1 ea- N-methy1-N-phenylcarbamy1)A -andr0stene-3B, 17 a-dl 01 16B-(diethy1carbamyl)androstane-3B,17a-diol 16B- piperidinocarbonyl) -androstane-3fl,17a- 101 163- (morpholiuocarbonyl) andr0stane3B,17a-dio1 16/3 N ,N'-dietl1ylamin0ethylcarbamyl -androstane- 36,17a-di01 16 B- (N-methyl-N-phenyl carbamyl) -andr0stane-3B,17a-

diol 16S-carbamyl-androstane3fi,

17v.- iol PRODUCTS 16B- (diethyl carbamyl) -A androstene-3,17-dione 16B- piperidinocarbonyl) -A androstene-3,17-di0ne 16B-(m0rpho1inocarbony1)- A -androstene-3,17'-di0ne 16B- N ,N'-diethy1aminoethylcarbamyl) -A 'androstene- 166- N-methyl-N-phenylcarbamyl) -A -androstene-3,17- dione 16B-(diethylcarbamy1)-androstane-3,17-dione 16B- (piperidinocarbonyl) -androstane-3.17-dione 165-(morpho1inocarbony1)- androstane-3,17-dione 16B- N ,N diethylaminoethylcarbamyl) -androstane- 3,17-dione 16B- N-methyl-N-phenylcarbamy1)-androstane-3,17-

dione 1GB-carbamyl-androstane-b,

17-dione Example XI A mixture of l g. of 16 3-carbamyl-A -androstene-3fl,

17 tZ-dIOI, 4 cc. of pyridine and 2 cc. of propionic anhydride was kept at room temperature overnight, poured into ice water, the formed precipitate was filtered, washed with water and dried- Crystallization from acetone-hexane gave the 3,17-dipropionate of 16,8-carbamyl-A -androstene- 313,17u-di0l.

By the same technique were treated the starting compounds under I to give the corresponding products under II.

I 1613- diethylcarbamyl ad -androstene-3fl,17a.-diol 16B- (piperidinocarbonyl) -A androstene-3B,l7a-diol 165- (morpholin0carbony1)- A -androstene-3B,17a-dio1 165- N ,N'-diethy1aminoethylcarbamyl -A -androstene- 3B,17a-dio1 16B- N-methyl-N-phenylcarbamyD-M-androstene-3B, 17 a-diol 16B- diethylcarbamyl) -androstane-3B,17a-diol 16B- (piperldinocarbonyl) -androstane-3B,17a-dio1 16B- (morpho1inocarbony1)- androstaue-3B,17a-diol 1613- (N ,N-diethylaminoethylcarbamyD-androstane 3B,17a-diol 16B- N-m ethyl-N-phenvl ca rbamyl) -androstane-3B,1'7adrol 16B-carbamyl-androstane-3B,

17 a-diol II 3,17-dipropionate of lfifi-(diethylcarbarnyD-M-androstene-3B,17a-diol 3,17-dipropionate of 16B-(piperidrnocarbonyl) -A '-androstene-3B,17a-dio1 3,17-dipr0pl0nate of 165- (morpholinocarbonyl) -A androsteue-3B,17a-dioi 3,17-d1prop1onate of 16B-(N, N'-diethylaminoethylcarbamyl) -A -androstene-3B, 17a-diol 3,17-dipropionate of 16fl-(N- methyl-N-phenylcarbam- 5})iM-androstene-Bfilfa- 3,17-dipropionate of 16B-(dlethylcarbamyl) -ar1dt0- s tane-3B,17a-di0l 3,17-dipropionate of 16B-(Diper1dln0carbonyl)-androstane-3B,17a-dio1 3,17-dipr0pionate of 165- (morpholinocarbonyl) -androstane-3fl,17a-diol 3,17-dipropionate of 16B-(N, N-diethylaruiucethy1cargiiurliyl) -audrostane-3fl,17a-

o 3,17-dipropionate of 1613-(N- methyl-N-phenylcarbam- ,vl)-androstane-3B,17adiol 3,17-d1propionate of JGB-car ganliyl-androstaneBflfla- Example XII Following the technique described in the foregoing example there were treated the starting compounds mentioned in said example except that propionic anhydride was substituted by caproic anhydride, cyclopentyl propionic anhydride and benzoyl chloride, thus affording the corresponding 3,17-dicaproates, 3,17-dicyclopentylpropionates and 3,17-dibenzoates thereof.

7 I claim: 1. A compound of the following formula:

wherein Z is a member of the group consisting of a double bond and a saturated linkage between C-4 and C; R and R are selected from the group consisting of hydrogen, a lower alkyl, an amino lower alkyl, a lower alkylamino lower alkyl, 2. dilower alkylamino lower alkyl, an aryl and an aralkyl group containing up to 8 carbon atoms and R and R together with the nitrogen atom form a. heterocyclic radical selected from the group consisting of piperidino, morpholino, pyrrolidino and piperazino.

2 1Gfi-carbamyl-A -androstene-3,17-dione.

3. 16 8-(diethyl carbamyl)-A -androstene-3,17-dione.

4. -1 6fi-(Nr-methyl-N-phenyl carbamyl)-A -landrostene- 3,17-dione.

5. 16(3-(piperidino carbonyl)-A -androstene-3,17-dione.

6. 1 6,3-carbamyl-androstane-3, 17 -dione.

7. 16,3-(diethyl carbamyl)-androstane-3,17-dione.

8. 16B (N',N' diethylaminoethyl carbamyl) androstane-3,17-dione.

9. 165-(morpho1ino carbonyl)-androstane-3,17-dione.

10. A compound of the following formula:

bond and a saturated linkage between 0-5 and C6; R and R are selected from the group consisting of hydrogen, a lower alkyl, an amino lower alkyl, a lower alkylamino alkyl, a di-lower alkylarnino alkyl, an aryl and an aralkyl group containing up to 8 carbon atoms and R and R together with the nitrogen form a heterocyclic radical selected from the group consisting of piperidine, morpholino, pyrrolidino, and piperazino; and R is selected from the group consisting of hydrogen and a hydrocarbon carboxylic acyl group of less than 12 carbon atoms.

1 1. 1GB-carbamyl-A -androstene-3[3,17a-diol.

1-2. IGfi-(diethyl carbamyl)-A -androstene-3fi,17a-diol.

13. 16,8-(N-methyl-N-phenyl carbamyD-M-androstene- 3,8,l7ot-di0l.

14. l6fi-(piperidino carbonyl)-A -androstene-3fi,17a-di- 01.

15 '16 3-carbamyl-androstane-3,8,17a-diol.

17. 1613-(N,N-diethylaminoethyl carbamyl) andro- StZiH-3}3,17oc-di0l.

18. 16 3-(morpholino carbonyl)-androstane-3B,17a-diol.

19. A process for the production of 16,B-(amino)-carbonyl androstane derivatives which comprises treating the corresponding l6fl-carboxylic acid with a suitable halogenating agent, thereafter reacting the thus formed acid halide with an amine selected from the group consisting of ammonia, a lower alkyl amine, a lower dialkyl amine, a lower alkylene amine, an arylamine and an aralkylamine each containing up to 8 carbon atoms, morpholine, piperidine, piperazine and pyrrolidine.

No references cited. 

1. A COMPOUND OF THE FOLLOWING FORMULA: 